Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7a8901079de652fa20e9b1545b5a22ca866601e68447f3cabca910a09dc1662' 
  AND token = 'YaiY5oiZpLCK6Pv0itWGCIZQ/wSV5lnU/9oPSodDPsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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