Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22e952c418884ee0b84439304b91b90060d04b16cf698c05ecf81e2b38bccf30' 
  AND token = 'FW2GRgY70pLuCPH4GEZUwercz3RRkYnFAP9gqLquXGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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