Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eae7d67a01c0029a844e5936d00ffcda7291dd402734484e197c354eb6af0a51' 
  AND token = 'Lf5UEWg6aY5z4d4nhdWE0Ca5Vm64r5i0VEol57ul17c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}