Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7e61d3c8019d75312d7337e4ebb118a6266645881f11e7a3b7307b8a41416bfc' 
  AND token = 'Aqr4OesuugzgDzQ8s3ooiDdqwsh1oYqjHZ6Z39jg2Ns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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