Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '992ebb52cc1112e6840f85996175648746e31fc25810a31fefbed333aeaa9d1a' 
  AND token = 'BtBq4jdrqfRtvLp9biJqFxvw7ybXsQONkxMEvYm2Rno=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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