Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e653f8b1c67ca28411252c56cedb1c9f255ea2dceac78b0cc1529310cc8a0894' 
  AND token = 'x+3+ekGkoY8r6+5lvub01UUdhK3PEBux3bRPxvdqzu4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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