Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b340d06cd6fefff17d87704be434c194302fa6cd0d53786077a11192834657ba' 
  AND token = '66eBMyEKP1LziPgULiIJ45zeodlmoxK7ZpoKDqQDydU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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