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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaf7dd78c1f2be3001123403fb9a66a449857f8ec783cd0ff282f3b33ae775c8' 
  AND token = '47aDS73JJ3Axu3VKNtSFreuvxrPvtoarezK9HrwkE0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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