Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13024a20c90759946b926871472a68058a6a3e697b131f00a3652fecf515f0bf' 
  AND token = 'Ag2od+iEh12YydiRV0get0insp/SGd0ITtI7hfxCnrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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