Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c70f465fb48765c52914b3759e17175aefb33236974580108f4b4b7c21b62bf' 
  AND token = 'JGTw4s1bm2tFTSbIcJH6xu6ZmguZHImMHTIDlReBFeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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