Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '048f01a0e3abd1639b56483f90425b54f8e1a4f1230ecc19cb93a624fee73de0' 
  AND token = 'zvuGRWJtK2h+XNthcNtcIDlGAhQPJBIr+U3cUSYlGiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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