Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '77c5cdf68e8de768e1ee9af2a4de3ad863d62bba3074ab442342d7aab6fb7108' 
  AND token = 'f25981kUmjWxzGuWKoyQLstKyqgSuW32b3eRiBbJdHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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