SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'dd8c9cd06e82d8084190a35570f19a845d225ddfadb2b3eb7a15cbc29885b910' 
  AND token = 'ircmnG4sr3NnwlAHH+VAO6Du/jm7evcsKhKWx++lwtY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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