Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ead6cd8d5f120644ade6909e621a0c41a5c9682f8396dc3941bd37d59dce2563' 
  AND token = 'uHsPltNgV79q5MB4VYretpmu0AUb4JiSSOudikTXFyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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