Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '291a264af622d57944f1f76ec061513fd5d66b0ba1dc5d10a718119e67d500fd' 
  AND token = 'QILSlJMaF6X+GgDw1H7T8krjISPZfImy+jv64aFSZ60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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