Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8613e4f6fcfad24a5fe88193bcde9e39bc168d1db9892f106dbc105e1790fbf2' 
  AND token = 'DWp1SBdwxbwBR1mcegJ/WK55FXrP8V6LJgHkf8DWzeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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