SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e14acb87272740d28f574b50f9ac5f7695e37a9bc2c418af45cf56514abd0143' 
  AND token = 'fyNKIoOckM4WvRLiYqJhdjfKPLPzpJXFT2Fzg+rXBgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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