Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4cae895b9fad787d9d141a6ebfce2d5a4d810e2b9214c1ac42ef9f2b12ffceeb' 
  AND token = 'yQ6DyN1PBJPmsrX2oZWdyvWe6IEHZNFLAbxrWyM4UNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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