Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec0832899892ad6bca31e096d623038ce67f19790656161cb92567cdb97fcd2f' 
  AND token = 'ijF4a1AsTSAsXxxVMuol7l8C9YvrLiRKnUQxkeCVJyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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