Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab0d034ed993e88aa6fd734cb96fa180c5cf7df799a93b6b74f7ebcfb7c5c758' 
  AND token = 'RIRuDpgDatcdOReBM/XLm8RpQ/PHS/HTMXMvvc0J5ds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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