Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '66970dfa0f37e8aff8035d4ecb802eb439be92b7f07abe6435efb60de5a0ed81' 
  AND token = 'hmO/2kdRiGMeNSem//D2x9lcwZHpbCZUnId5fu6zsvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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