Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033cd45a742717e966a2af550b875a0f9080f0160b6a0b198eb547d9783bc4fa' 
  AND token = 'SnF/3VBNVEnY7bcTJPPCRqafj76LufLeUrJAcXVFvlM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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