Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a64242611cd50e4d665d83b1cc44c0f4f618f0614c18b01df5fe4ffaab940e80' 
  AND token = 'qLcikwPoqJbWP0rg0IoALhPHvUcObNWk6POuHEDGmqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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