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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbd049ea6ca36c0f6ee5b85fcbb719575d007f62f43f41785c9e6666e615ae17' 
  AND token = 'YMAUiYUkqd8Cp7wS8FPuA4drnpNjXk+v544SjVqta4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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