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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb7fbf7fb6ed6927853db1ddf683c17e24ccf895052bdd9b77e1a4ab150344c7' 
  AND token = 'zpnAdBf16cC2AJ5ziU1ysg6/v75jMKV/ezccENJGa+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.88920

JSON explain

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