Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8890cefc08087bb03be7351d55c30dde13902c1a624132a1f725f413ecc779fd' 
  AND token = '2UkpSg+pJuW/tHX7OfQsHPrx6uMx3iA4VJyvhRT/Guc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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