Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db87c56edea68b6caef5065ed1e744f377b0a6fdd32af878c5c1ad1af56615d5' 
  AND token = 'ECGXJhrjFWU/r1C/vApFWT/7r39QaRg4gH606W5Gfoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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