Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9265726ef36a9310d9926d894ecda95c7a962e223b3d3aa86075298d2996a0c' 
  AND token = 'ibn4JyJpx3/OztCSbV6ykR/NoCV1/Y2ebfBsSt+JDkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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