Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f30d3e3ceadbc26927ad95884dddc1419b2db6c4c20f8da730ca53637547995' 
  AND token = 'cjF6fcHBdg+MLaeEGkD/RbiKqssDiHo2vB4EQCozW7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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