Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebe01a261ede13d2322ef9326bcb797230f559e12e7c3823abe662978dcafbf1' 
  AND token = 'erUb+2yl9rXcJOJBlb6/p4Sn4p4OvNK89oE0FH5ISXo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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