Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '01c79df283e24b10a7aebda4e7c48588f2461695b7e142ecc2cae1c845fce38e' 
  AND token = 'UHVWkcHpwfKokd0SxAFiJvYkk3DS9l7rK/YYq11TDfs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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