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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccbb44d6384240a063b83836cd55aa8da495d1f5957e48ebb7d419e9112e9b78' 
  AND token = 'CyD45mQXboy5x67n3L/MuT0bHdKdK9Au090dxLsFcx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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