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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e2a6e8fffdcb3d25abf0a6000b2bd505facad6bb5751d63e8476d120c4aa267d' 
  AND token = 'nIFRiAtfLWKd0x+L4MT0OSq55Bwz3mFpXdv3gifQTW0=' 
  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"
    }
  }
}