Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09b69d9ddb7d6a2817709b364c6a89d87191510872cd830b240967dc2d4668ea' 
  AND token = 'dM4YmoBBbaJ4vPIkaqh7wBYwjXdd9a6xKA3RpJmMkSc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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