Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ed8f999cddd4f57fcb990be3cd06c95a50b287a63dfbd4fdf689663f415054e' 
  AND token = 'FoyTeRiy3iQXhbWfaAvwFzPb5LOM5oTumyIU3JahZ6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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