Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72ba3cca831f4716f384eb71984ccb92226c8b3f4a4d63073bc35a32586ae931' 
  AND token = 'u0a4ZX3dXXjPW1I4hbZj9auBvE8zXWNF2U6DhI2Ffo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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