Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0a0cf82b85c392ecb847215211ef651df6a6ee8a1ce1e24e85dad9304679db71' 
  AND token = 'GPCxZPDucROA0wYWTlfhlsKNvLk3l5IszBPbp8ecuUk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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