Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61db07643ec6186e388c4fed4c52d618cf0c21fec155b718efab006c19c62d00' 
  AND token = 'lPU9RmgNBIK6p9b3HrNHroQQxlOF6IUkdJqewY/IFso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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