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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '280a787d0ddf618d34872d1429e88c52119dd52a4564ffe1a911c457c90a69b7' 
  AND token = 'hR9N83bTnPFayXWjTAXi1rOF47RaM22IK9bIQASWeI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}