Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cf434ddfd936cac307e27b51cb5d3ebe32c576d34c0422064a710d12c0c59194' 
  AND token = 'KtLSsaE8pt9aDq9CV4WEOYjAhvYAhTHikU4W+wH9sfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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