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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '3abd5bbcff675e078bfa5c09583501a7bec0ae0e5fbf62a8aac5e59a1edaf8ae' 
  AND token = 'GHxEVsGJZN6J04W4AQqdU1fVwKp0y2RoapGz3Ufj8kU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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