Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2281c363d727865d35234375c7feafd1a66fbaaf20e14da60dc014aeaace10e' 
  AND token = 'nDEQr32lQeG8riBBNmx3adv/I7juE/8i/g3He1tfIgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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