Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce77c63020f6f22239a64dfc132302b508e41c7dcccf3f98f50ccea5db861dc5' 
  AND token = 'YJZRfINmwA7UsXmVpR0g7gBlPsWf8ExVOS5FvOp9bi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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