Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8762ae7a0af3615d45fede7592fc1b4df559b4f47555cde4bd3a12b15ab261a8' 
  AND token = 'mS3QaeNI7ygsNSiOd/FU4ueKpY4V5R6hgkwUllEXWps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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