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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07480c7bb6080a453ffb7eacbad8aa133ff227f50ea6a7f1eeb466525d6dad90' 
  AND token = 'Bv9jCtn0gNeFau0Z938FtO8VbhKrOFaDWOMcgJUiDaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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