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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26035eb1534a153668d4e9d0e5dd5bc736ece68e35ae63c9ace07c4c2ce93963' 
  AND token = 'VgTPLUY7E/k0KLmquZGKTu7RT4A8xwS0zNeGy6nH8pE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00136

JSON explain

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