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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24ada5e16372e0b9d3469f81d50bd3f7ab661f5676673a93c6b67723176b84b4' 
  AND token = 'Re2c6rTSh2u2S+YVyTiTSyFsySg2fOFBxwl+PwwUGAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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