Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '82c6b93c66d0c32798bc298c1052b4701995195bbe349dfe08397d971b1fffeb' 
  AND token = 'MYHvALmTgrlV0q44TG96gb3Ox3V6/V918LxjYY4cEvs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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