Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0908758798ab147c7048ce295e129a2b24a64e40d7e2c36c9061439fa07e4476' 
  AND token = 'jEJ9q+s07J2TWHCfMPSKOL/pwDpGJOiJTgoBg8PW2QI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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