Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bda10c9a18bf26314eb98f4acdb650135b6ab1d790398595ebbc5f746394831b' 
  AND token = '/+BSL23xd25n43v9znrkEF57DCAoXjdiVBEFVDaj3dw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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