Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc264f26812c6e09635e4483d895ea10987ad684e31614caf5eac9e38852fecd' 
  AND token = 'sW3U2pR0Y+nD98LK53+wxW27zCXHRqjZcIwYVcaLWv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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