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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e919417a37e2926577f39894bfd7308f7b36cfff072eb70362132542dc2d444f' 
  AND token = '9dgOfLr6EvsMsBTllxyNmQ9oeEeOXOFs5Vc3FUiDDnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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