Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6410e8f45ca21253c8127d19ea9a24f096e92b0b890476c9bcb215149316bc26' 
  AND token = 'klKY3mi8j1OnJrO3TrfSqDcx0ir3/a1fqARSyt2RgOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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