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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5562702daf0074bd6a04dbc2cb03a8798e3c05ff35424d1eed036a66340aaa28' 
  AND token = '/tdmou6pgfNC2NRTGy0HXIh6qSwRH64k6yvAMm6PP3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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