Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae3a17c3c944d5ebd344e055c46df069f5d489f30e8b0b5049d4db62b308ccc6' 
  AND token = 'koqUVzR0XSI+f2ooQsZB7+sM45zKAVeelpifWHSzBi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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