Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0d22252af2de2b27498a69a4c4d9ca4c2a39fa643b194c5d3427e26a2799555' 
  AND token = 'm8mOi12u+JuC5JeKqaEVN8NW2G2xXKQlYyOtaXBHAxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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