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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec41e5aeab2961438501461cd703c909b4ca5b425ae2eda1a6376fa3790ae9fc' 
  AND token = 'igLEpXKzjix0Uw2HVhp4nwHLPeJG5U08bBZKheypEYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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