SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07abc2ead206e1d5287901b5bc87ffe630b69a3f1d8cb402c5ed44c2d534ab5e' 
  AND token = 'CthPaAKCKdoBluzym6DQBGbnYBsNgXg4RR5LSUzqOwM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}