Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dee14264c248a870bb9c9e81c3725c3fa84dc347fa34d7227465428d7dab7737' 
  AND token = '1ZyQ3HSWA7E+NjQYRJaRbk/oVFH89p7Y+eISdi4gFDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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