Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd1fdd332540b3a0317a68be1cbd0b0aa6b9708f75290850f76493c33241f952' 
  AND token = '1wGs4qnr4zbij659FSHPWgPEl6GDtvEpe9igCP8+qVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00210

JSON explain

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