Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e01c22ae7eff5b0f6abd0fa31b5a4edf2eb75b6c6460d81befc0f0eca98b8a19' 
  AND token = '11EbNLLYK2PapXjfpyUjRDpDfEeeLCGs9wuyElQlkfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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