Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '773759b80f69adc06b4a2369952fe8a365e6db68242f1d014a7e62c6d69f449b' 
  AND token = 'ikajLlKTM0PvEzqWy13TaabkU7OpxtGQkMJ7AQ2n7bA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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