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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9914c171ebaafb2e0ceb4312d1372dd84e695d62e7504609aff900943652e74b' 
  AND token = 'w+cPkeLO/A384ea+IfsJIrvl75VXLa1DB880/sgoH9c=' 
  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"
    }
  }
}