Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3217356b24cb73c411b8f1ff2731d8f648706c5a0bb8a18c7d0710b2cf90fda6' 
  AND token = '32v2bAIuMRtSfVzjTCKpbPr+3e7qDYv5f8WU3yoH85U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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