Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8be151d6726b56ccfff0d1a913df00cf4c0e8ab2bdc8d91205ab433158a505e6' 
  AND token = 'XnpHY/U7s5KyGgt5rg0wwJveGAmoT4u4wcg28PWR1I0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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